WO2016021496A1 - スパッタ装置および処理装置 - Google Patents
スパッタ装置および処理装置 Download PDFInfo
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- WO2016021496A1 WO2016021496A1 PCT/JP2015/071788 JP2015071788W WO2016021496A1 WO 2016021496 A1 WO2016021496 A1 WO 2016021496A1 JP 2015071788 W JP2015071788 W JP 2015071788W WO 2016021496 A1 WO2016021496 A1 WO 2016021496A1
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- 238000004544 sputter deposition Methods 0.000 title claims abstract description 55
- 238000012545 processing Methods 0.000 title claims description 10
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 238000000151 deposition Methods 0.000 claims description 19
- 230000008021 deposition Effects 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000002245 particle Substances 0.000 description 41
- 239000010408 film Substances 0.000 description 35
- 230000000052 comparative effect Effects 0.000 description 11
- 238000011156 evaluation Methods 0.000 description 11
- 238000011109 contamination Methods 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/34—Gas-filled discharge tubes operating with cathodic sputtering
- H01J37/3411—Constructional aspects of the reactor
- H01J37/3447—Collimators, shutters, apertures
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/54—Controlling or regulating the coating process
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/56—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
- C23C14/564—Means for minimising impurities in the coating chamber such as dust, moisture, residual gases
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/4401—Means for minimising impurities, e.g. dust, moisture or residual gas, in the reaction chamber
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32798—Further details of plasma apparatus not provided for in groups H01J37/3244 - H01J37/32788; special provisions for cleaning or maintenance of the apparatus
- H01J37/32816—Pressure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32917—Plasma diagnostics
- H01J37/32935—Monitoring and controlling tubes by information coming from the object and/or discharge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/34—Gas-filled discharge tubes operating with cathodic sputtering
- H01J37/3411—Constructional aspects of the reactor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/34—Gas-filled discharge tubes operating with cathodic sputtering
- H01J37/3411—Constructional aspects of the reactor
- H01J37/3441—Dark space shields
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/34—Gas-filled discharge tubes operating with cathodic sputtering
- H01J37/3476—Testing and control
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02266—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by physical ablation of a target, e.g. sputtering, reactive sputtering, physical vapour deposition or pulsed laser deposition
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/02—Details
- H01J2237/026—Shields
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/245—Detection characterised by the variable being measured
- H01J2237/24571—Measurements of non-electric or non-magnetic variables
- H01J2237/24585—Other variables, e.g. energy, mass, velocity, time, temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/32—Processing objects by plasma generation
- H01J2237/33—Processing objects by plasma generation characterised by the type of processing
- H01J2237/332—Coating
- H01J2237/3322—Problems associated with coating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic System
- H01L21/2855—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic System by physical means, e.g. sputtering, evaporation
Definitions
- the present invention relates to a sputtering apparatus and a processing apparatus.
- the pressure gauge is exposed to the sputtering space, there is a problem that the pressure gauge is contaminated by a sputtered film or the like.
- the diaphragm vacuum gauge is sensitive to contamination.
- a shutter that can be shielded is provided in a chamber to reduce the amount of film sneaking into an ion gauge connected to an opening.
- the first aspect of the present invention is capable of accurately measuring the pressure in the sputtering space even during film formation while reducing the contamination of the film formed on the substrate with particles.
- a sputtering apparatus that can reduce the amount of film wrapping around the film (film formation).
- the first aspect of the present invention provides a sputtering apparatus having a space defining member that defines a sputtering space for forming a film on a substrate, for example.
- the space defining member has a recess.
- An opening is provided at the bottom of the recess.
- the sputtering apparatus includes a shielding member that shields the opening from the sputtering space.
- the opening is formed so that a pressure gauge capable of measuring the pressure in the sputtering space can be attached.
- the shielding member is arranged so that at least a part thereof is embedded in the recess.
- the second aspect of the present invention provides a processing apparatus advantageous for maintaining the measurement accuracy of a measuring instrument communicating with a space for processing a substrate while reducing the generation of particles.
- the second aspect of the present invention provides, for example, a processing apparatus having a space defining member that defines a space.
- the space defining member has a recess.
- An opening for communicating the space and the measuring instrument is provided at the bottom of the recess.
- the said processing apparatus is provided with the shielding member which interrupts
- FIG. 3B is a diagram showing film thickness evaluation points af in the comparative example shown in FIG. 3A.
- FIG. 3C is a diagram showing film thickness evaluation points af in the embodiment shown in FIG. 3B.
- FIG. 3B shows the simulation result (ratio of the thickness of the film
- FIG. 1 shows a sputtering apparatus of the present invention.
- the sputtering apparatus of FIG. 1 includes an adhesion preventing plate 6 (separable) that defines a sputtering space in the vacuum chamber 1, and a surface of a substrate (not shown) placed on a substrate stage 7 in the vacuum chamber 1.
- a thin film of sputtered particles (for example, metal) flying from the target 5 provided on the upper portion of the vacuum chamber 1 is formed.
- the deposition preventing plate 6 provided so as to cover the inner wall of the vacuum chamber 1 corresponds to a space defining member that defines a sputtering space SS in which sputtering is performed.
- the sputtering apparatus of FIG. 1 has a recess 13 provided in the deposition preventing plate 6, an opening 8 provided at the bottom of the recess 13, and a pressure that is attached to the opening 8 and that can measure the pressure in the sputtering space SS.
- a total 16 and a shielding member 14 that shields the opening 8 from the sputtering space SS are included.
- 1 has a gas inlet (not shown) for introducing a gas (for example, argon) into the sputtering space SS defined by the deposition preventing plate 6 and an exhaust for exhausting the vacuum chamber 1.
- a mouth 12 The shielding member 14 is arranged in a state of being embedded in the recess 13.
- the exhaust port 12 is connected to the main valve 11.
- the deposition preventing plate 6 is an optional component.
- the target 5 is provided in the upper part of the vacuum chamber 1a
- the substrate stage 7 is provided in the lower part of the vacuum chamber 1a
- the recess 13 is the lower wall of the vacuum chamber 1a. It is desirable to form.
- a portion of the vacuum chamber 1 a where the target 5, the substrate stage 7 and the shielding member 14 are provided corresponds to a member constituting at least a part of the wall of the vacuum chamber 1.
- a portion where the exhaust port 12 and the main valve 12 are provided corresponds to a member that does not constitute at least a part of the wall of the vacuum chamber 1.
- the vacuum chamber 1a corresponds to a space defining member, and the inside of the vacuum chamber 1a corresponds to a sputtering space.
- connection member (vacuum pipe) 17 having one end attached to the opening 8 and the other end attached to the pressure gauge 16 is separately provided. Also good.
- the sputtering apparatus of FIG. 1 may have at least one of a heater for heating the substrate stage 7 and a water cooling jacket for cooling the substrate stage 7. Further, a vacuum pump (not shown) (for example, a dry pump or a turbo molecular pump) is connected to the exhaust port 12.
- a vacuum pump (not shown) (for example, a dry pump or a turbo molecular pump) is connected to the exhaust port 12.
- the pressure gauge 16 is close to the substrate stage 7 where the film is formed on the substrate in order to measure the process pressure value of the sputtering space SS inside the deposition preventing plate 6 as accurately as possible.
- FIG. 2 It is desirable to be installed in FIG. 2 is an enlarged view of the embedded shielding member 14.
- the shielding member 14 preferably has an umbrella-shaped structure.
- “umbrella shape” refers to a shape having a cover 14b and a columnar support (for example, a cylindrical portion) 14a that supports the cover 14b.
- the umbrella shape may include a mushroom shape.
- the shape of the cover 14b may include a circle, an ellipse, a rounded quadrangle, a polygon, a rounded polygon, and the like.
- the shielding member 14 can be disposed in the recess 13 having the R portion 13 a provided in the deposition preventing plate 6 or the vacuum chamber 1.
- the shielding member 14 is not fixed to the recess 13 by means such as screwing, and can be removed by inserting the columnar support 14 a into the recess 16 a of the pressure gauge 16. This is to facilitate maintenance and avoid detachment of the film attached to the screw.
- FIG. 3A shows a comparative example in which the deposition preventing plate 60 or the vacuum chamber 100 does not have the concave portion 13 and the shielding member 140 is arranged without the cover 14b being positioned in the concave portion 13.
- FIG. 3B shows a configuration of the present embodiment in which the deposition plate 6 or the vacuum chamber 1 is provided with the recess 13 and the shielding member 14 is disposed so that the cover 14 b is positioned in the recess 13.
- the sputtered particles jump out of the target 5 according to the cosine law and fly to the shielding member 140.
- the sputtered particles A that have jumped out of the target 5 fly directly to the shielding member 140 and form a film on the shielding member 140. Since the energy of the sputtered particles A is strong, the adhesion to the shielding member 140 is strong. Therefore, it is unlikely that the film formed on the shielding member 140 by the sputtered particles A peels off and becomes particles and fly to the substrate.
- FIG. 3A the sputtered particles A that have jumped out of the target 5 fly directly to the shielding member 140 and form a film on the shielding member 140. Since the energy of the sputtered particles A is strong, the adhesion to the shielding member 140 is strong. Therefore, it is unlikely that the film formed on the shielding member 140 by the sputtered particles A peels off and becomes particles and fly to the substrate. In the case of FIG.
- the sputtered particles B1 and sputtered particles B2 that have jumped out of the target 5 according to the cosine law are bounced back by the deposition preventing plate 60, the vacuum chamber 100, or the shielding member 140 once or a plurality of times.
- a film is formed on the shielding member 140 by indirectly flying to the shielding member 140.
- the back region of the shielding member 140 that does not face the target 5 on the surface of the shielding member 140 is a portion that cannot be seen from the target 5, that is, a portion where the sputtered particles A, sputtered particles B1, and sputtered particles B2 do not fly directly.
- the adhesion to the back side region of the shielding member 140 is weak.
- region of the shielding member 140 peels with the sputter
- the sputtered particles B1 and sputtered particles B2 fly to the pressure gauge, and the pressure gauge 16 can be contaminated by a sputtered film or the like.
- the sputtered particles A that have jumped out of the target 5 fly directly to the shielding member 14 and form a film on the shielding member 14. Since the energy of the sputtered particles A is strong, the sputtered particles A have high adhesion to the shielding member 14. Therefore, as in the case of FIG. 3A, it is unlikely that the film formed on the shielding member 14 will peel off and become particles and fly to the substrate.
- the back side region of the shielding member 14 that does not face the target 5 on the surface of the shielding member 14 is a portion that cannot be seen from the target 5, that is, a portion where the sputtered particles A, sputtered particles B1, and sputtered particles B2 do not fly directly.
- the sputtered particles B1 and sputtered particles B2 that have jumped out of the target 5 according to the cosine law are rebounded by the deposition preventing plate 6 or the vacuum chamber 1 or the shielding member 14 once or a plurality of times, and indirectly to the shielding member 14. Come in. In the case of FIG.
- the cover 14b of the shielding member 14 is disposed in the deposition preventing plate 6 or the concave portion 13 of the vacuum chamber 1, and the inlet 20 reaching the back side region of the shielding member 14 is narrowed. ing. Therefore, compared with the case of FIG. 3A, the probability that the sputtered particles B1 form a film in the back side region of the shielding member 14 is low.
- a columnar support for example, a cylindrical member
- the shielding member 14 is not screwed, for example, as shown in FIG. 3B, a columnar support (for example, a cylindrical member) 14a that can be inserted into the deposition preventing plate 6 or the opening 8 of the vacuum chamber 1 is attached to the cover 14b. It may be convenient to fix the shielding member 14 by inserting the columnar support 14a into the recess 16a of the pressure gauge 16 provided at the center of the back side.
- the upper surface 14-1 of the shielding member 14 disposed in the recess 13 and the upper surface 6-1 of the deposition preventing plate 6 or the upper surface 1-1 of the vacuum chamber 1 belong to the same plane.
- the member 14 may be disposed so as to be completely buried in the recess 13.
- the shielding member 14 may be disposed so that a part of the cover 14 b protrudes from the upper surface 6-1 or the upper surface 1-1 of the vacuum chamber 1.
- the gap distance B in FIG. 3B is too narrow, measurement with a measuring instrument such as the pressure gauge 16 will be hindered, so it is desirable that the gap distance B be approximately the same as the gap distance A.
- 4A to 4C show the simulation results of the thickness of the film formed on the shielding member in the comparative example shown in FIG. 3A and the embodiment shown in FIG. 3B.
- 4A shows the film thickness evaluation points af in the comparative example shown in FIG. 3A
- FIG. 4B shows the film thickness evaluation points af in the embodiment shown in FIG. 3B.
- FIG. 4C shows the ratio of the film thickness at the evaluation point af of the embodiment shown in FIG. 3B to the film thickness at the evaluation point af of the comparative example shown in FIG. 3A. Specifically, FIG. 4C shows the ratio of the film thickness at the evaluation point af of the embodiment shown in FIG. 3B when the film thickness at the evaluation point af of the comparative example shown in FIG. 3A is 100%. It is shown.
- the film thickness at the evaluation point af of the embodiment shown in FIG. 3B is 84%, 82%, 7%, 43%, 0% of the film thickness of the evaluation point af of the comparative example shown in FIG. 3A, respectively. 7%.
- the embodiment shown in FIG. 3B has a thinner film formed by the sputtered particles flying from the target 5 than the comparative example shown in FIG. 3A.
- the generation of particles in the shielding member 14 can be reduced, and the film formed on the substrate placed on the substrate stage 7 is contaminated with particles.
- the reduction of the generation of particles in the shielding member 14 is advantageous in order to reduce the adhesion of particles to the pressure gauge 16 (contamination of the pressure gauge 16). This contributes to maintaining the accuracy of measurement by the pressure gauge 16.
- the pressure gauge 16 is a diaphragm vacuum gauge
- the measurement accuracy is greatly reduced due to the adhesion (contamination) of particles (that is, it is sensitive to contamination), so that the generation of particles in the shielding member 14 is reduced. Significance is great.
- FIG. 5 shows a second example of the embedded shielding member 14.
- the shielding member 14 shown in FIG. 5 includes an umbrella-shaped first member 14 d provided so as to have a predetermined gap with the bottom of the recess 13, and a cylindrical first member provided on the periphery of the opening 8. 2 members 14c.
- the first member 14b and the second member 14c constitute a labyrinth structure.
- the labyrinth structure is provided by a structure in which a first member 14b having a concave shape portion and a second member 14c having a convex shape portion are fitted in a non-contact manner.
- the first member 14 b and / or the second member 14 c may be integrated with the deposition preventing plate 6 or the vacuum chamber 1, or may be separate from the deposition preventing plate 6 or the vacuum chamber 1.
- FIG. 6 is a view showing a third example of the embedded shielding member of the present invention.
- a connection member (vacuum pipe) 17 having one end attached to the opening 8 and the other end attached to the pressure gauge 16 is provided.
- the shielding member 14 is preferably formed as a separate member from the connection member (vacuum pipe) 17.
- the above description is an example in which the present invention is applied to a sputtering apparatus, but the present invention can also be applied to other processing apparatuses such as a CVD apparatus or an etching apparatus.
- the measuring instrument connected to the opening 8 may be a measuring instrument different from the pressure gauge 16.
- the measuring device may be, for example, an analyzer that analyzes gas.
- the opening 8 communicates a space (a space for processing the substrate) corresponding to the sputtering space SS in the above example and the measuring instrument.
- the shielding member 14 is disposed so as to block a straight path between the space and the opening 8.
Abstract
Description
Claims (10)
- 基板に膜を形成するためのスパッタリング空間を規定する空間規定部材を有するスパッタ装置であって、
前記空間規定部材は、凹部を有し、
前記凹部の底部には、開口部が設けられ、
前記スパッタ装置は、前記開口部を前記スパッタリング空間から遮蔽する遮蔽部材を備え、
前記開口部は、前記スパッタリング空間内の圧力を計測可能な圧力計が取り付け可能に形成され、
前記遮蔽部材は、少なくとも一部が前記凹部に埋め込まれるように配置されている、
ことを特徴とするスパッタ装置。 - 前記空間規定部材が、真空チャンバの壁の少なくとも一部を構成する部材であることを特徴とする請求項1記載のスパッタ装置。
- 前記空間規定部材が、前記真空チャンバの内壁を覆うように設けられた防着板であることを特徴とする請求項1記載のスパッタ装置。
- 前記遮蔽部材は、傘形状を有することを特徴とする請求項1記載のスパッタ装置。
- 前記遮蔽部材は、前記凹部の前記底部と前記遮蔽部材との間に隙間を有するように設けられた傘形状の第1の部材と、前記開口部の周辺部に設けられた筒状の第2の部材とからなり、前記第1の部材と前記第2の部材との間の領域が、ラビリンス構造となるように構成されていることを特徴とする請求項1記載のスパッタ装置。
- 前記開口部には、前記スパッタリング空間内の圧力を計測可能な圧力計が取り付けられていることを特徴とする請求項1から5のいずれか1項に記載のスパッタ装置。
- 前記遮蔽部材は、前記圧力計と取り外し可能であることを特徴とする請求項1から6のいずれか1項に記載のスパッタ装置。
- 前記圧力計は、一端が前記開口部に取り付けられ、他端が前記圧力計に取り付けられた接続部材を介して、前記開口部に接続されていることを特徴とする請求項6に記載のスパッタ装置。
- 前記遮蔽部材は、前記接続部材とは別部材で形成されており、取り外し可能であることを特徴とする請求項8に記載のスパッタ装置。
- 空間を規定する空間規定部材を有する処理装置であって、
前記空間規定部材は、凹部を有し、前記凹部の底部には、前記空間と測定器とを連通させるための開口部が設けられ、
前記処理装置は、前記空間と前記開口部との間の直線経路を遮断する遮蔽部材を備え、前記遮蔽部材の少なくとも一部は、前記凹部に配置されている。
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KR1020177005670A KR101939505B1 (ko) | 2014-08-08 | 2015-07-31 | 스퍼터 장치 및 처리 장치 |
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JP6990121B2 (ja) | 2018-03-06 | 2022-01-12 | 株式会社Screenホールディングス | 基板処理装置 |
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KR20170041777A (ko) | 2017-04-17 |
US20170140907A1 (en) | 2017-05-18 |
US10062553B2 (en) | 2018-08-28 |
JPWO2016021496A1 (ja) | 2017-04-27 |
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JP6046871B2 (ja) | 2016-12-21 |
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